/*
 *    FileExtensionFilter.java
 *    Copyright (C) 2007 University of Waikato, Hamilton, New Zealand
 *    @author Richard Kirkby (rkirkby@cs.waikato.ac.nz)
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program. If not, see <http://www.gnu.org/licenses/>.
 *    
 */
package moa.gui;

import java.io.File;

import javax.swing.filechooser.FileFilter;

/**
 * A filter that is used to restrict the files that are shown.
 *
 *  
 * @author Richard Kirkby (rkirkby@cs.waikato.ac.nz)
 * @version $Revision: 7 $ 
 */
public class FileExtensionFilter extends FileFilter {

    protected String fileExtension;

    public FileExtensionFilter(String extension) {
        this.fileExtension = extension.toLowerCase();
    }

    @Override
    public boolean accept(File f) {
        if (f != null) {
            if (f.isDirectory()) {
                return true;
            }
            return (f.getName().toLowerCase().endsWith("." + this.fileExtension));
        }
        return false;
    }

    @Override
    public String getDescription() {
        return ("*." + this.fileExtension);
    }
}
